Some of the most dramatic events in the universe occur when certain stars die — and explode catastrophically in the process. When these star deaths, or supernovae, occur, their brightness can rival the light of a whole galaxy. The galaxy NGC 5468, shown in this Hubble image, has hosted a number of these supernovae the […]

European Space Agency astronaut and current International Space Station Commander Luca Parmitano and ​crewmate Andrew Morgan (out of frame) performed the third spacewalk to repair the Alpha Magnetic Spectrometer.

In 1572, Danish astronomer Tycho Brahe was among those who noticed a new bright object in the constellation Cassiopeia.

Amy Ross, a spacesuit engineer at Johnson Space Center, NASA Administrator Jim Bridenstine, watch as Kristine Davis and Dustin Gohmert wear prototype spacesuits.

Expedition 60 astronaut Christina Koch photographed the Soyuz MS-15 crew ship ascending into space after its launch from Kazakhstan.